Punch insert



FIG. 1 is a perspective view of a punch insert showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a second perspective view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a right side elevation view thereof.

The broken lines in the figures represent portions of the article which form no part of the claimed design. 

CLAIM We claim the ornamental design for a punch insert, substantially as shown and described. 